Atty. David J. Lyon

Atty. David J. Lyon

David J. Lyon is a lawyer practicing customs and international trade law, classification.

Washington Washington 51 yrs experience 51 year
Call (732) 360-6947 Book Appointment

Profile Summary

About David J. Lyon at a glance

David J. Lyon is an Of Counsel based in Washington, District of Columbia, practicing at Grunfeld, Desiderio, Lebowitz, Silverman & Klestadt LLP. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on international. Admitted to practice in Nevada (1975), Ohio (1979), and U.S. Tax Court (1987). Educated at Cornell University (J.D. New, 1975) and Brigham Young University (B.A., 1972). Recognitions include AV Preeminent. Active member of American Bar Association. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • David J. Lyon is a lawyer practicing customs and international trade law, classification
  • David J. received a B.A. degree from Brigham Young University in 1972, and has been licensed for 51 years
  • David J. practices at Grunfeld, Desiderio, Lebowitz, Silverman & Klestadt LLP in Washington, DC and 1 other location

Practice Areas Explained

David J. Lyon's Areas of Practice

Each practice area below reflects the types of cases David J. Lyon handles, with a brief overview of what that area of law covers.

International Law

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

David J. Lyon is one of 40,133 international attorneys indexed nationally. Browse international attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

Practicing law in District of Columbia. Legal matters in District of Columbia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Washington are typically filed in the local municipal court or the appropriate District of Columbia state district court, depending on subject matter and amount in controversy. An attorney licensed in District of Columbia brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in District of Columbia courts without local counsel or pro hac vice admission.

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about David J. Lyon

Where is David J. Lyon's law office located?
David J. Lyon's law practice is located in Washington, District of Columbia. The firm is Grunfeld, Desiderio, Lebowitz, Silverman & Klestadt LLP. You can contact the office directly through this profile page.
What practice areas does David J. Lyon handle?
David J. Lyon focuses on international. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has David J. Lyon practiced law?
David J. Lyon has 51+ years of legal experience and has been licensed since 1975.
Where did David J. Lyon go to law school?
David J. Lyon earned their education at (J.D. New, 1975); (B.A., 1972).
How can I contact David J. Lyon for a consultation?
You can contact David J. Lyon directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has David J. Lyon received?
David J. Lyon's notable recognition includes: AV Preeminent.

Education

J.D. New
Cornell University
- 1975
B.A.
Brigham Young University
- 1972

Awards

AV Preeminent

Bar Admissions

Nevada
Admitted: 1975
Ohio
Admitted: 1979
U.S. Tax Court
Admitted: 1987

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